Function: 1 Wide application, suitable for cars with OBD2 interface and protocol. 2. Multi-function display car speed, water temperature, voltage and single mileage. 3 Alarm function, overspeed alarm, water temperature alarm, voltage alarm, fatigue driving reminder, fault alarm 4 HUD has adaptive light sensor, clear backlight during the day and soft light sensor without glare at night. 5 High definition display effect, clear and no ghosting, host+reflective film, backlight is clear. Specifications: Item Type: Head Up Display Material: Electronic Features: Car speed, water temperature, voltage, mileage alarm: Overspeed alarm, Water temperature alarm, Voltage alarm, Fatigue driving reminder, Failure alarm Fiat: OBD2 agreed gasoline vehicle produced in the United States of 2004 and later in 2008 and other areas. OBD2 WILL NOT FIT THE FOLLOWING GENERAL MODELS: (Models made before 2004) Will NOT fit Chryslers that do not fit JEEP sails that do not fit DODGE NOT fit these France and Italy models: Will not fit Fiat Does not fit Peugeot Citroen Does not fit Maserati DS NOT fit N ot Does not fit Amilka. No.